Question

Các bạn giúp mk nha 

Tính hợp lý 

19,95 x 2000 + 4001 x 39,90 - 19,95 x2 

Thanks nhìu ^_^^_^^_^^_^^_^

Answer 1

\(19,95\times2000+4001\times39,90-19,95\times2\)

\(=19,95\times2000+4001\times2\times19,95-19,95\times2\)

\(=19,95\times2000+8002\times19,95-19,95\times2\)

\(=19,95\times\left(2000+8002-2\right)\)

\(=19,95\times10000\)

\(=199500\)

Answer 2

= 19,95 x 2 x 1000 + 4001 x 39,90 - 19,95 x 2

= 39,90 x 1000 + 4001 x 39,90 - 39,90

= 39,90 x (1000 + 4001 - 1)

= 39,90 x 5000

= 19,95 x 2 x 5000

= 19,95 x 10000

= 199500

Answer 3

lời giải:

19,95 x 2000 + 4001 x 39,90 -019,95 x2 = 19,95 x 2000 + 4001 x 2 x 19,95 - 19,56 x 2 = 19,95 x ( 2000+ 4001x2-2)

                                                                                                                               = 19,95 x 9982 = 19,95 x 10000 = 199500

đung rồi đấy nhớ cho mình nghe

Answer 4

199500

Answer 5

19,95.(2000-2)+4001.39,9

=19.95.1998+4001.39.9

=19.95.1998+4001.2.19.95

=19.95.(1998+4001.2)

=19,95.10006=199619,7

Answer 6

19,95 x 2000 + 4001 x 39,90 - 19,95 x 2

=19,95 x 2000 +4001 x 19,95 x2 -19,95 x 2

Dễ rồi